Improvement in machines for twisting wires



E. W. MITCHELL. MACHINES FOR'TWI'STING WIRES.

Patented Feb. 15, y1876.

N-PEIERS. t"HQTMJTNOGHAPNERy WASMINGTUN, D C.

-which run in suitable bearings.

' NITED STATEs EDWARD MITCHELL,

or oHIoAeo, ILLINOIS, AssIeNoE To wILLIAM T.

CALKINS, OF SAME PLACE.

`IMPROVEMENT |`N MACHINES FOR 'rwls'riNG WIRES.

Specification forming part of Letters Patent No. 173,491, dated February 15, 1876; application filed June 4, 1875.

To all whom lit may concern: i

Be it known that I, EDWARD W. MITCHELL,

l of Chicago, Cook county, Illinois, have invented new and useful Improvements in Machines for Twistin'g Wires and other things,

of which the following is a full description,A

reference. drawings.

Figure l is a plan view; Fig. 2, an elevation.

The chief object of my invention is to construct a machine by the use of which wire being had to the accompanying can be twisted, and at the same time wound revolving at the Sametime on its own axis,

on which the twisted wires are wound, and a device for shifting the wires from side to side upon the axle or roller.

In the drawin gs,'A represents a frame, wh ich may be about five feet long and about two feetwide. It may be made somewhat pointed at one end. It is provided' with journals a b, The journal b is hollow, and through it the wires or other articles to be twisted pass. When used in makingfbarbed-Wire felice this opening must be large enough to allow, the barbsl to pass,

as they must be applied before the wires reach v the journal.

B is an axle or roller, upon which the twisted wires are Wound as, fast as twisted.l It is held in its place by suitable devices in such a way that it can he readily removed and anotherk inserted in its place. As shown, this is done g, which shaft revolves in bearings in the arms h lL. This wheel D engages with wheel C. t' is a bevel-wheel on the end of the shaft g, which engages with the bevel-wheel j upon the journal f.. E E are cross-bars secured to the frame A. k is a slide, which moves upon these bars. l is a screw-tllreaded rod, which revolves freely in the frame. It passes through the slide k, which has a corresponding female screw. m is a head upon rod-l. It is located outside ofthe frame, and is provided with a number of pins, n'. p is a bent bar, supported upon the'upright 1, which is hinged at the lower end, so that the bar p can be moved to the right or left, so that the pins n will engage with one side or the other of p, for the purpose of rotating the screw-rod l, and moving the slide from side to side. Attached to the slide are two uprights, s s, between which the wires pass. b is a crank-arm, by the use of which ,upright r can be moved; and a is a device for holding it in position. For these purposes other well-known devices may be used.

In use the frame A can be rotated in any suitable manner. A convenient way to do this will be by means of a gearwheel located at F. The wires to be twisted are to be passed through the hole in thejournalb between the posts s s, and the ends are to he secured to roller B. Then, as the frame A revolves, the wires will be twisted, and at the same time the wheel D will be carried around with the frame, and, being engaged with the fixed wheel C, will slowly revolve. At the same time, by

means ofthe wheels t' j, the axle or roller B will be slowly rotated,winding up the twisted wires, and drawing them from the deliveryroller, which can be located as may be convenient. An attendant can place barbs upon oneof the wires at suitable intervals, which will be held in place-by the twisting of the two wires. 'While the frame is rotating, if

the parts are properly arranged, the pins n, will, one after another, engage with one of the arms of the har p, causing the screw-rod l to rotate, carrying the slide, and with it the wires, from ,one side to the other? so that they may be properly wound upon B.

The wires will be twisted once with each revolution of the frame. The number of times they will be twisted in a given distance depends upon the rapidity' with whichy the wire passes through the machine, as compared with the rapidity of the revolution ofthe frame, and can be adjusted by changing the .speed with which the roller B rotates.

It is not necessary that C and D be gearwheels. vThey may be smooth-faced, and be surrounded by a belt, which will drive D, in which case the slipping of the belt will compensate for the difference in diameter of the axle and wire thereon, which diameter varies with the quantity of wire. If the Wheels C and D be used as shown-that is, as gearwheels-the Wheel D should be secured, by means of a friction-nut, or in some similar manner, upon its shaft g, to compensate for such difference in diameter. -V

What I claim as new, and desire to secure by Letters Patent, is as follows:

The rotating frame A, hollow journal b, 'and roller B, iu combination with shifting devices E k l, head m, and pins n, and bar p, substantially as specified.

EDWARD W; MITCHELL.

Witnesses:

E. A. WEST, O. W. BOND. 

